/* CSSVariantEngine v3.0 — aisports-home9.com.cn */
/* Palette: slate-gradient | Radius: soft | Shadow: layered-blue */
/* Spacing: compact | Transition: smooth */
/* Section layouts: {"news":"masonry-2","features":"grid-3","hero":"split","testimonials":"grid-3","partners":"grid-6","faq":"with-sidebar","stats":"grid-3","cta":"full-bg"} */

:root {
    --color-primary: #1e293b;
    --color-primary-dark: #0f172a;
    --color-accent: #3b82f6;
    --color-surface: #f1f5f9;
    --color-text: #0f172a;
    --color-muted: #64748b;
    --color-line: #cbd5e1;
    --rgb-primary: 30,41,59;
    --rgb-accent: 59,130,246;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 18px;
    --shadow-sm: 0 1px 2px rgba(15,23,42,.06), 0 2px 8px rgba(59,130,246,.10);
    --shadow-md: 0 4px 12px rgba(15,23,42,.10), 0 10px 26px rgba(59,130,246,.16);
    --shadow-lg: 0 14px 34px rgba(15,23,42,.16), 0 28px 60px rgba(59,130,246,.22);
    --space-section: 3.5rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.45s cubic-bezier(.22,.61,.36,1);
    --heading-weight: 700;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background: linear-gradient(168deg, #f8fafc 0%, #eef2f7 42%, #e2e8f0 78%, #dbe2ea 100%);
    caret-color: var(--color-accent);
    accent-color: var(--color-accent);
}
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: #0f172a; }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-card);
    transition: var(--transition);
    background-image: linear-gradient(180deg, #ffffff 0%, #f8fafc 60%, #eef2f7 100%);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    background-image: linear-gradient(135deg, #60a5fa 0%, #3b82f6 45%, #1d4ed8 100%);
    box-shadow: 0 2px 6px rgba(29,78,216,.28), 0 8px 20px rgba(59,130,246,.22);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

/* ========== Section Layout Variants ========== */

/* news: masonry-2 */
/* 两列瀑布流 */
.news-grid { column-count: 2; column-gap: var(--space-gap); }
.news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); }

/* features: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* hero: split */
/* 左文右图 */
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; }

/* testimonials: grid-3 */
.testimonial-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
.faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: full-bg */
.cta-section {
    background: linear-gradient(128deg, #0f172a 0%, #1e293b 38%, #1d4ed8 82%, #3b82f6 100%);
    color: #f8fafc;
    padding: 4rem 2rem;
    box-shadow: inset 0 1px 0 rgba(148,163,184,.35), 0 20px 44px rgba(15,23,42,.28);
}

/* Page Layout: narrow-centered */
/* 窄版居中 */
.page-main { max-width: 860px; margin: 0 auto; }

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); }
.card {
    border: 1px solid transparent;
    border-image: none;
    background-image: linear-gradient(180deg, #ffffff 0%, #f8fafc 60%, #eef2f7 100%), linear-gradient(135deg, rgba(96,165,250,.55) 0%, rgba(148,163,184,.35) 48%, rgba(30,41,59,.45) 100%);
    background-origin: border-box;
    background-clip: padding-box, border-box;
}
header, .header, .navbar {
    background: linear-gradient(180deg, rgba(248,250,252,.92) 0%, rgba(241,245,249,.62) 68%, rgba(226,232,240,0) 100%);
    backdrop-filter: blur(12px) saturate(140%);
    -webkit-backdrop-filter: blur(12px) saturate(140%);
}

/* Responsive */
@media (max-width: 1024px) {
    .news-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .feature-list { grid-template-columns: repeat(2, 1fr) !important; }
    .partner-grid { grid-template-columns: repeat(3, 1fr) !important; }
    .stats-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .hero-inner { grid-template-columns: 1fr !important; }
}
@media (max-width: 640px) {
    :root { --space-section: 2rem; --space-card: 1rem; --space-gap: 0.75rem; }
    .news-grid { grid-template-columns: 1fr !important; }
    .feature-list { grid-template-columns: 1fr !important; }
    .faq-list { grid-template-columns: 1fr !important; }
    .testimonial-list { column-count: 1 !important; }
    .partner-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .stats-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .cta-inner { grid-template-columns: 1fr !important; }
}